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Finding the Fourth Proportional to 562.30, 776.03 and 313.68

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Solution

The fourth proportional to 562.30, 776.03 and 313.68 is: 432.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    562.30 : 776.03 = 313.68 : x
  2. Step 2: Convert to fraction form
    562.30/776.03 = 313.68/x
  3. Step 3: Cross multiply
    562.30x = 776.03 × 313.68
  4. Step 4: Simplify right side
    562.30x = 243,425.09
  5. Step 5: Solve for x
    x = 243,425.09/562.30
  6. Step 6: Final answer
    x = 432.91

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.